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January 29th, 2025 23:31
Latitude 3310 - Defaulting to RAID after dead battery
I and the IT admin at a school and have around 400 Latitude 3310. The most common problem I have: If a student lets the battery die, they lose their BIOS settings and revert to RAID. All have been setup as AHCI. So then the laptops won't boot until they bring them to me and I change it back to AHCI. They do also lose the date and time.
When entering the BIOS options, I do put the checkmark next to 'Save as custom user setting'. Though it doesn't retain that setting.
Is there a way to make it retain the AHCI setting when the battery dies?
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ejn63
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January 29th, 2025 23:51
If the system is losing its settings when the battery is depleted, the reserve/CMOS battery is dead -- replace that (or them if you have more than one system). At four years old, the main battery in these may also be in need of replacement.
Service manual
https://www.dell.com/support/product-details/en-us/product/latitude-13-3310-laptop/docs
TeddyKGB72o
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January 30th, 2025 17:03
@ejn63
There isn't a way to customize the BIOS to default to AHCI? Hoping to replace these within a year or so, don't really want to take them apart to replace the BIOS battery.
ejn63
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January 30th, 2025 17:45
The default is IRST. If your change to AHCI isn't being retained, it's a power issue -- the CMOS is battery backed.